Considering the case for biodiversity cycles: re-examining the evidence for periodicity in the fossil record.

PLoS One · 2007 · PMC1945088 · PMID 17712407

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hedged sentences

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closest p

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boldest claim

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somewhat significantno p-value reported

It is also worth considering the phase relationship of the three quantities that show somewhat significant spectral peaks in the vicinity of 27 Myr: fractional biodiversity (φ∼4); extinction intensity (φ∼5); and cumulative origination φ∼2).

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marginally significantno p-value reported

This marginally significant peak appears to survive in slightly modified form through most data cuts.

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